Gutter or channel for treating artificial threads or yarns, particularly imitation-silk yarns, with acids or an acid containing liquor



Nov. 10 ,1925- E. ELSAESSER ET AL GUTTER OR CHANNEL FOR TREATING ARTIFICIAL THREADS 0R YARNS, PARTICULARLY IMITATION SILK YARNS, WITH ACIDS 0R AN ACID CONTAINING LIQUOR Filed Oct. 29, 1923 2 Sheets-Sheet 1 Jnven fors I'. ELsaess ear N 11 wezv y iv-1min 'mQifa/l/vy Nov. 10, 1925. 1,561,445

E. ELSAESSER E AL GUTTER OR CHANNEL FOR TREATING ARTIFICIAL THREADS OR YARNS PARTICULARLY IMITATION SILK YARNS, WITH ACIDS OR AN ACID CONTAINING LIQUOR Filed Oct. 29, 1923 2 Sheets-Sheet 2 7n ven fore E E Law 636 e/L I. ZCLZLL nrelz Patented Nov. 10, 1925.

UNITED STATES PATENT OFFICE.

EMIL ELSAESSER, OF BARMEN-LANGERFELD, AND WALDEMAB zUn LOWEN, OF AR- MEN-RITTERSHAUSEN, GERMANY, ASSIGNORS, BY MESNE ASSIGNMENTS, TO AMERICAN BEMBERG CORPORATION, A CORPORATION OF DELAWARE.

GUTTER R CHANNEL FOR TREATING ARTIFICIAL THREADS OR YARNS, PARTICU- LARLY IMITATION-SILK YARNS, WITH ACIDS OR AN ACID CONTAINING LIQUOR.

Application filed October 29, 1923. Serial No. 671,565.

To all whom it may concern:

Be it known that we, EMIL ELsAnssER, and WALDEMAR ZUR Lownn, citizens of the Deutsches Reich, residing at Barmen-Lang- 6 erfeld and Barmen-Rittershausen, Germany, respectively, have invented certain new and. useful improvements in a gutter or channel for treating artificial threads or yarns, particularly imitation-silk yarns, with acids 10 or an acid containing liquor (for which we filed an application in Germany on August 19th, 1922); and we do hereby declare the following to be. a full, clear, and exact description thereof.

Our invention relates to an improved gutter or channel for treatin artificial threads or yarns, particularly imitation silk yarns, with acids or an acid containing liquor.

In the present state of the art gutters or channels employed for the stated purpose are of a straight form and arranged to be inclined for the liquorto run off at one side. In this way only a small portion of the liquor can come to act on the thread and most of the liquor must flow over the channel unused.

The object of our invention is to remedy this deflect and with this object in view we provide a bend or several bends in the gutter or channel so that by locating the bend or one of the bends exactly below the point where the liquor is supplied to the gutter or channel, the liquor Wlll flow off in both directions and thereby bring about a continued and double effect as will be explained hereinafter more in detail.

In the accompanying drawing forming part of this specification two embodiments ofour invention are illustrated by way of example, Figure 1 being a longitudinal sectionof the improved gutteror channel according to one embodiment; Figure'2 being a cross-section taken on the line 2-2 of Figure 1 and Figure 3 showing diagrammatically the manner of application whilst Figure 4 is a longitudinal section of the-improved gutter according to'a modification.

' In the embodiment shown in Figures 13 the gutter or channel I) for receiving and guidin the thread a has a bend (Z to be locate perpendicularly below the cock of .d of the gutter or channel the liquor container, as shown in Figure 3, so that the liquor dropping down from the container will flow off in the gutter or channel in both directions and thereby produce a prolonged and double effect. Preferably the said bend at is to be provided at a oint dividing the whole of the length 0 the channel into a shorter portion Z for the reception of the thread a and a longer portion is which preferably may be about twice as long as the portion Z. But it oes Without saying that any other dimension of the two portions 70 and 1 may be preferred as the case may require, and the two portions 70 and 1 may even be of equal length.

The thread a composed of a plurality of single artificial fibres, such as imitation silk filaments, is fed in the direction of the arrow in Figure 3 through the gutter or channel b and at the same time treated or washed with an acid liquor dropping from the container onto the uppermost point of the gutter or channel While the thread a, is running therethrough before being wound about a bobbin, spool, roll or the like a, as will be readily understood by persons versed in the art. The wound up thread again comes in contact with the liquor h flowing down from the outlet z of the gutter or channel onto the bobbin, spool, or roll a.

On the other hand the liquor that flows down in the portion Z of the gutter or channel towards the outlet f takes along with it allof the water the thread still contains from previous treatments to which the thread had been subjected and which need not be described, since all ofthe treatments the imitation silk threads have to undergo, are commonly known. The liquor flowing oil the outlet f may be received in a separate receptacle.

1n passing over the elevated oint or bend the thread is flattened or spread out on account of frictional stress at the said point, so that also the inner filaments of the thread will be thoroughlylwashed and freed from any copper salts that may have been retained. In this manner threadsor'yarns of uniform quality are obtained.

The bend may be given any desired shape.

As already stated hereinbefore a. plurality of bends ma be provided in the gutter or channel as s own in Figure 4 so that the latter will comprise a horizontal portion m intermediate between sloping portions d d being the bends between the horizontal and the slopin portions. The acid first spreads over t e horizontal portion m and as soon as a certain amount thereof has collected thereon it starts to flow away on both sides over the bends 03 a. The action of the liquor upon the threads is increased by the accumulation oi the acid on the horizontal part m. As regards the material the tter or channel may be made of any aci proof substance, such as glass, porcelain, stoneware, or of acid-proof metals, such as lead and the like.

From the foregoing description it will be seen that simple and eflicient means are here-' in provided for accomplishing the object of our invention, but while the embodiments of our invention shown and described are well adapted to serve the purpose for which they are intended, we wish it to be understood, that the inventioncis not limited to the precise construction, shape and size set forth,

but includes such changes as may be made within the spirit of the invention and the scope of the appended claims.

What we claim is:

1. A gutter or channel for treating artificial threads in particular imitation silk threads or yarns, with an acid or an acidiferous liquor, said gutter or channel haw ing a bend between its ends and located at such a point as to form two sloping end portions for compelling the liquor admitted at the hi hest part of the gutter to flow ed in both irections towards its lower ends, one of which sloping portions is about half the length of the other one, substantially as set forth.

2. In an apparatus for treating artificial threads and the like, the combination of a i WALDEW zun LQWEN. 

